Hello! We are traveling to Anguilla after Christmas, flying into St. Martin and taking a ferry to Anguilla. We've done this trip 3 times before, but we always checked our scuba gear. This time we have to go through San Juan, and the probability of checked luggage making it on the same plane with us is questionable. We'll be on Anguilla, not St. Martin, where our bags would arrive and where it would be very difficult to go back over to retrieve the luggage. My question is: how can we pack everything in carryons only? Anyone who has done this before and can advise, please help! Thanks in advance.